each tuner only does one vehicle

[one truck]

Each tuner only does one vehicle? Why? can tuner be reset to do another gm vehicle without paying more money?

[06MonteSS]

If you no longer have your previous vehicle you used it on, you would have had to restore the original backup stock tunes to that vehicle in order to unlock/reset the inTune... and then you would be able to use it on another supported GM vehicle... ----- If you do not have the previous vehicle and you did not restore the original backup stock tune to that previous vehicle, then the inTune is still locked to that vehicle, and you will have to buy a new GM license, as is mentioned below...

If you still have the original vehicle you used it on and still have it tuned, then you would have to buy an additional GM license for the 2nd GM vehicle for $149, and then you would need to run the Update Agent program on your pc/laptpop and update your inTune to add the additional GM license to your current inTune i2 i2030 or inTune i3 8245 Platinum programmer, and then you'd be able to use that same inTune on the other 2nd supported GM vehicle...

And if it's a 2017/2018 GM vehicle, you would also have to by the ECM unlock for $40....